I Became The Demon King System

Name: I Became The Demon King System
Author: Mi-seu Pe-ti

by Mi-seu Pe-ti

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ActionComedyDramaFantasyPsychologicalTragedyAdventure

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Synopsis

Takashi died under a truck and woke up as the literal System for the new Demon King, a snarky, meme-spitting admin panel trapped in a crimson void. His job? Issue brutal quests like “Slaughter 12,000 holy soldiers or both your souls get deleted.” The catch? The Demon King is his little sister Aiko, reincarnated with no memories of their Earth life, and the System was engineered around their sibling bond to turn her into the perfect world-ending monster. I Became the Demon King’s System is a fast-paced dark isekai tragedy covered in savage humor: one brother’s desperate fight to save his sister from the exact fate he’s forced to guide her toward, one ruthless notification at a time.